diff --git a/apps/advanced/composer.json b/apps/advanced/composer.json
index 66ff36c3bc..14487e3ccb 100644
--- a/apps/advanced/composer.json
+++ b/apps/advanced/composer.json
@@ -17,10 +17,7 @@
         "php": ">=5.4.0",
         "yiisoft/yii2": "*",
         "yiisoft/yii2-bootstrap": "*",
-        "yiisoft/yii2-swiftmailer": "*",
-        "bower-asset/jquery": "@stable",
-        "bower-asset/jquery-ui": "@stable",
-        "bower-asset/jquery.inputmask": "@stable"
+        "yiisoft/yii2-swiftmailer": "*"
     },
     "require-dev": {
         "yiisoft/yii2-codeception": "*",
diff --git a/apps/basic/composer.json b/apps/basic/composer.json
index 64364dc9c1..56756ec817 100644
--- a/apps/basic/composer.json
+++ b/apps/basic/composer.json
@@ -17,10 +17,7 @@
         "php": ">=5.4.0",
         "yiisoft/yii2": "*",
         "yiisoft/yii2-bootstrap": "*",
-        "yiisoft/yii2-swiftmailer": "*",
-        "bower-asset/jquery": "@stable",
-        "bower-asset/jquery-ui": "@stable",
-        "bower-asset/jquery.inputmask": "@stable"
+        "yiisoft/yii2-swiftmailer": "*"
     },
     "require-dev": {
         "yiisoft/yii2-codeception": "*",
diff --git a/composer.json b/composer.json
index 8513e5fe79..28cf5dc286 100644
--- a/composer.json
+++ b/composer.json
@@ -78,13 +78,13 @@
         "yiisoft/yii2-composer": "*",
         "ezyang/htmlpurifier": "4.6.*",
         "cebe/markdown": "0.9.*",
-        "bower-asset/jquery": "~1.11 | ~2.1",
-        "bower-asset/jquery.inputmask": "~3.1",
-        "bower-asset/punycode": "~1.3",
-        "bower-asset/yii2-pjax": "~2.0",
-        "bower-asset/bootstrap": "~3.2",
-        "bower-asset/jquery-ui": "~1.11",
-        "bower-asset/typeahead.js": "~0.10"
+        "bower-asset/jquery": "2.1.*@stable | ~2.1@stable | ~1.11@stable",
+        "bower-asset/jquery.inputmask": "3.1.* | ~3.1",
+        "bower-asset/punycode": "1.3.* | ~1.3",
+        "bower-asset/yii2-pjax": "2.0.* | ~2.0",
+        "bower-asset/bootstrap": "3.2.* | ~3.1",
+        "bower-asset/jquery-ui": "1.11.*@stable | ~1.11@stable",
+        "bower-asset/typeahead.js": "0.10.* | ~0.10"
     },
     "require-dev": {
         "phpunit/phpunit": "3.7.*",
@@ -134,6 +134,9 @@
         "framework/yii"
     ],
     "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        },
         "asset-installer-paths": {
             "npm-asset-library": "vendor/npm",
             "bower-asset-library": "vendor/bower"
diff --git a/extensions/apidoc/composer.json b/extensions/apidoc/composer.json
index 16e8cd101d..5bdced982b 100644
--- a/extensions/apidoc/composer.json
+++ b/extensions/apidoc/composer.json
@@ -1,41 +1,44 @@
 {
-	"name": "yiisoft/yii2-apidoc",
-	"description": "API Documentation generator for the Yii framework 2.0",
-	"keywords": ["yii2", "phpdoc", "apidoc", "api", "documentation"],
-	"type": "yii2-extension",
-	"license": "BSD-3-Clause",
-	"support": {
-		"issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aapidoc",
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Carsten Brandt",
-			"email": "mail@cebe.cc"
-		}
-	],
-	"minimum-stability": "dev",
-	"require": {
-		"yiisoft/yii2": "*",
-		"yiisoft/yii2-bootstrap": "*",
-		"phpdocumentor/reflection": ">=1.0.3",
-		"phpdocumentor/reflection-docblock": ">2.0.1",
-		"nikic/php-parser": "0.9.*",
-		"cebe/js-search": "*",
-		"cebe/markdown": "dev-master as 0.9.0",
-		"cebe/markdown-latex": "*"
-	},
-	"autoload": {
-		"psr-4": { "yii\\apidoc\\": "" }
-	},
-	"bin": ["apidoc"],
-	"extra": {
-		"asset-installer-paths": {
-			"npm-asset-library": "vendor/npm",
-			"bower-asset-library": "vendor/bower"
-		}
-	}
+    "name": "yiisoft/yii2-apidoc",
+    "description": "API Documentation generator for the Yii framework 2.0",
+    "keywords": ["yii2", "phpdoc", "apidoc", "api", "documentation"],
+    "type": "yii2-extension",
+    "license": "BSD-3-Clause",
+    "support": {
+        "issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aapidoc",
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Carsten Brandt",
+            "email": "mail@cebe.cc"
+        }
+    ],
+    "minimum-stability": "dev",
+    "require": {
+        "yiisoft/yii2": "*",
+        "yiisoft/yii2-bootstrap": "*",
+        "phpdocumentor/reflection": ">=1.0.3",
+        "phpdocumentor/reflection-docblock": ">2.0.1",
+        "nikic/php-parser": "0.9.*",
+        "cebe/js-search": "*",
+        "cebe/markdown": "dev-master as 0.9.0",
+        "cebe/markdown-latex": "*"
+    },
+    "autoload": {
+        "psr-4": { "yii\\apidoc\\": "" }
+    },
+    "bin": ["apidoc"],
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        },
+        "asset-installer-paths": {
+            "npm-asset-library": "vendor/npm",
+            "bower-asset-library": "vendor/bower"
+        }
+    }
 }
diff --git a/extensions/authclient/composer.json b/extensions/authclient/composer.json
index 81c5aa1f2a..789259f4ba 100644
--- a/extensions/authclient/composer.json
+++ b/extensions/authclient/composer.json
@@ -1,27 +1,32 @@
 {
-	"name": "yiisoft/yii2-authclient",
-	"description": "External authentication via OAuth and OpenID for the Yii framework",
-	"keywords": ["yii2", "OAuth", "OpenID", "auth"],
-	"type": "yii2-extension",
-	"license": "BSD-3-Clause",
-	"support": {
-		"issues": "https://github.com/yiisoft/yii2/issues?state=open",
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Paul Klimov",
-			"email": "klimov.paul@gmail.com"
-		}
-	],
-	"require": {
-		"yiisoft/yii2": "*",
-		"ext-curl": "*"
-	},
-	"autoload": {
-		"psr-4": { "yii\\authclient\\": "" }
-	}
+    "name": "yiisoft/yii2-authclient",
+    "description": "External authentication via OAuth and OpenID for the Yii framework",
+    "keywords": ["yii2", "OAuth", "OpenID", "auth"],
+    "type": "yii2-extension",
+    "license": "BSD-3-Clause",
+    "support": {
+        "issues": "https://github.com/yiisoft/yii2/issues?state=open",
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Paul Klimov",
+            "email": "klimov.paul@gmail.com"
+        }
+    ],
+    "require": {
+        "yiisoft/yii2": "*",
+        "ext-curl": "*"
+    },
+    "autoload": {
+        "psr-4": { "yii\\authclient\\": "" }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }
diff --git a/extensions/bootstrap/composer.json b/extensions/bootstrap/composer.json
index 744611fc47..07f86d6709 100644
--- a/extensions/bootstrap/composer.json
+++ b/extensions/bootstrap/composer.json
@@ -19,11 +19,16 @@
     ],
     "require": {
         "yiisoft/yii2": "*",
-        "bower-asset/bootstrap": "~3.2"
+        "bower-asset/bootstrap": "3.2.* | ~3.1"
     },
     "autoload": {
         "psr-4": {
             "yii\\bootstrap\\": ""
         }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
     }
 }
diff --git a/extensions/codeception/composer.json b/extensions/codeception/composer.json
index fa99992554..da0fb8ece5 100644
--- a/extensions/codeception/composer.json
+++ b/extensions/codeception/composer.json
@@ -1,25 +1,30 @@
 {
-	"name": "yiisoft/yii2-codeception",
-	"description": "The Codeception integration for the Yii framework",
-	"keywords": ["yii2", "codeception"],
-	"type": "yii2-extension",
-	"license": "BSD-3-Clause",
-	"support": {
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Mark Jebri",
-			"email": "mark.github@yandex.ru"
-		}
-	],
-	"require": {
-		"yiisoft/yii2": "*"
-	},
-	"autoload": {
-		"psr-4": { "yii\\codeception\\": "" }
-	}
+    "name": "yiisoft/yii2-codeception",
+    "description": "The Codeception integration for the Yii framework",
+    "keywords": ["yii2", "codeception"],
+    "type": "yii2-extension",
+    "license": "BSD-3-Clause",
+    "support": {
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Mark Jebri",
+            "email": "mark.github@yandex.ru"
+        }
+    ],
+    "require": {
+        "yiisoft/yii2": "*"
+    },
+    "autoload": {
+        "psr-4": { "yii\\codeception\\": "" }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }
diff --git a/extensions/composer/composer.json b/extensions/composer/composer.json
index f311581d66..9f0e139672 100644
--- a/extensions/composer/composer.json
+++ b/extensions/composer/composer.json
@@ -1,29 +1,32 @@
 {
-	"name": "yiisoft/yii2-composer",
-	"description": "The composer plugin for Yii extension installer",
-	"keywords": ["yii2", "composer", "extension installer"],
-	"type": "composer-plugin",
-	"license": "BSD-3-Clause",
-	"support": {
-		"issues": "https://github.com/yiisoft/yii2/issues?state=open",
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Qiang Xue",
-			"email": "qiang.xue@gmail.com"
-		}
-	],
-	"autoload": {
-		"psr-4": { "yii\\composer\\": "" }
-	},
-	"extra": {
-		"class": "yii\\composer\\Plugin"
-	},
-	"require": {
-		"composer-plugin-api": "1.0.0"
-	}
+    "name": "yiisoft/yii2-composer",
+    "description": "The composer plugin for Yii extension installer",
+    "keywords": ["yii2", "composer", "extension installer"],
+    "type": "composer-plugin",
+    "license": "BSD-3-Clause",
+    "support": {
+        "issues": "https://github.com/yiisoft/yii2/issues?state=open",
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Qiang Xue",
+            "email": "qiang.xue@gmail.com"
+        }
+    ],
+    "require": {
+        "composer-plugin-api": "1.0.0"
+    },
+    "autoload": {
+        "psr-4": { "yii\\composer\\": "" }
+    },
+    "extra": {
+        "class": "yii\\composer\\Plugin",
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }
diff --git a/extensions/debug/composer.json b/extensions/debug/composer.json
index 0ae32c1fa3..6edd31af17 100644
--- a/extensions/debug/composer.json
+++ b/extensions/debug/composer.json
@@ -25,5 +25,10 @@
         "psr-4": {
             "yii\\debug\\": ""
         }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
     }
 }
diff --git a/extensions/elasticsearch/composer.json b/extensions/elasticsearch/composer.json
index d38454f9e7..5d3c3ab012 100644
--- a/extensions/elasticsearch/composer.json
+++ b/extensions/elasticsearch/composer.json
@@ -1,27 +1,32 @@
 {
-	"name": "yiisoft/yii2-elasticsearch",
-	"description": "Elasticsearch integration and ActiveRecord for the Yii framework",
-	"keywords": ["yii2", "elasticsearch", "active-record", "search", "fulltext"],
-	"type": "yii2-extension",
-	"license": "BSD-3-Clause",
-	"support": {
-		"issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aelasticsearch",
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Carsten Brandt",
-			"email": "mail@cebe.cc"
-		}
-	],
-	"require": {
-		"yiisoft/yii2": "*",
-		"ext-curl": "*"
-	},
-	"autoload": {
-		"psr-4": { "yii\\elasticsearch\\": "" }
-	}
+    "name": "yiisoft/yii2-elasticsearch",
+    "description": "Elasticsearch integration and ActiveRecord for the Yii framework",
+    "keywords": ["yii2", "elasticsearch", "active-record", "search", "fulltext"],
+    "type": "yii2-extension",
+    "license": "BSD-3-Clause",
+    "support": {
+        "issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aelasticsearch",
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Carsten Brandt",
+            "email": "mail@cebe.cc"
+        }
+    ],
+    "require": {
+        "yiisoft/yii2": "*",
+        "ext-curl": "*"
+    },
+    "autoload": {
+        "psr-4": { "yii\\elasticsearch\\": "" }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }
diff --git a/extensions/faker/composer.json b/extensions/faker/composer.json
index a8a5bc1a2b..589cb1b251 100644
--- a/extensions/faker/composer.json
+++ b/extensions/faker/composer.json
@@ -1,26 +1,31 @@
 {
-	"name": "yiisoft/yii2-faker",
-	"description": "Fixture generator. The Faker integration for the Yii framework.",
-	"keywords": ["yii2", "faker", "fixture"],
-	"type": "yii2-extension",
-	"license": "BSD-3-Clause",
-	"support": {
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Mark Jebri",
-			"email": "mark.github@yandex.ru"
-		}
-	],
-	"require": {
-		"yiisoft/yii2": "*",
-		"fzaninotto/faker": "*"
-	},
-	"autoload": {
-		"psr-4": { "yii\\faker\\": "" }
-	}
+    "name": "yiisoft/yii2-faker",
+    "description": "Fixture generator. The Faker integration for the Yii framework.",
+    "keywords": ["yii2", "faker", "fixture"],
+    "type": "yii2-extension",
+    "license": "BSD-3-Clause",
+    "support": {
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Mark Jebri",
+            "email": "mark.github@yandex.ru"
+        }
+    ],
+    "require": {
+        "yiisoft/yii2": "*",
+        "fzaninotto/faker": "*"
+    },
+    "autoload": {
+        "psr-4": { "yii\\faker\\": "" }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }
diff --git a/extensions/gii/composer.json b/extensions/gii/composer.json
index 3ec4d169f7..3bbc1276b0 100644
--- a/extensions/gii/composer.json
+++ b/extensions/gii/composer.json
@@ -21,11 +21,16 @@
         "yiisoft/yii2": "*",
         "yiisoft/yii2-bootstrap": "*",
         "phpspec/php-diff": ">=1.0.2",
-        "bower-asset/typeahead.js": "~0.10"
+        "bower-asset/typeahead.js": "0.10.* | ~0.10"
     },
     "autoload": {
         "psr-4": {
             "yii\\gii\\": ""
         }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
     }
 }
diff --git a/extensions/imagine/composer.json b/extensions/imagine/composer.json
index e4ec8ec12b..65d0d4151a 100644
--- a/extensions/imagine/composer.json
+++ b/extensions/imagine/composer.json
@@ -1,29 +1,34 @@
 {
-	"name": "yiisoft/yii2-imagine",
-	"description": "The Imagine integration for the Yii framework",
-	"keywords": ["yii2", "imagine", "image", "helper"],
-	"type": "yii2-extension",
-	"license": "BSD-3-Clause",
-	"support": {
-		"issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aimagine",
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Antonio Ramirez",
-			"email": "amigo.cobos@gmail.com"
-		}
-	],
-	"require": {
-		"yiisoft/yii2": "*",
-		"imagine/imagine": "v0.5.0"
-	},
-	"autoload": {
-		"psr-4": {
-			"yii\\imagine\\": ""
-		}
-	}
+    "name": "yiisoft/yii2-imagine",
+    "description": "The Imagine integration for the Yii framework",
+    "keywords": ["yii2", "imagine", "image", "helper"],
+    "type": "yii2-extension",
+    "license": "BSD-3-Clause",
+    "support": {
+        "issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aimagine",
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Antonio Ramirez",
+            "email": "amigo.cobos@gmail.com"
+        }
+    ],
+    "require": {
+        "yiisoft/yii2": "*",
+        "imagine/imagine": "v0.5.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "yii\\imagine\\": ""
+        }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }
diff --git a/extensions/jui/composer.json b/extensions/jui/composer.json
index a97aab5599..cc3ce8db90 100644
--- a/extensions/jui/composer.json
+++ b/extensions/jui/composer.json
@@ -19,11 +19,16 @@
     ],
     "require": {
         "yiisoft/yii2": "*",
-        "bower-asset/jquery-ui": "~1.11"
+        "bower-asset/jquery-ui": "1.11.*@stable | ~1.11@stable"
     },
     "autoload": {
         "psr-4": {
             "yii\\jui\\": ""
         }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
     }
 }
diff --git a/extensions/mongodb/composer.json b/extensions/mongodb/composer.json
index 6556bd00ae..142567c355 100644
--- a/extensions/mongodb/composer.json
+++ b/extensions/mongodb/composer.json
@@ -1,27 +1,32 @@
 {
-	"name": "yiisoft/yii2-mongodb",
-	"description": "MongoDb extension for the Yii framework",
-	"keywords": ["yii2", "mongo", "mongodb", "active-record"],
-	"type": "yii2-extension",
-	"license": "BSD-3-Clause",
-	"support": {
-		"issues": "https://github.com/yiisoft/yii2/issues?state=open",
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Paul Klimov",
-			"email": "klimov.paul@gmail.com"
-		}
-	],
-	"require": {
-		"yiisoft/yii2": "*",
-		"ext-mongo": ">=1.3.0"
-	},
-	"autoload": {
-		"psr-4": { "yii\\mongodb\\": "" }
-	}
+    "name": "yiisoft/yii2-mongodb",
+    "description": "MongoDb extension for the Yii framework",
+    "keywords": ["yii2", "mongo", "mongodb", "active-record"],
+    "type": "yii2-extension",
+    "license": "BSD-3-Clause",
+    "support": {
+        "issues": "https://github.com/yiisoft/yii2/issues?state=open",
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Paul Klimov",
+            "email": "klimov.paul@gmail.com"
+        }
+    ],
+    "require": {
+        "yiisoft/yii2": "*",
+        "ext-mongo": ">=1.3.0"
+    },
+    "autoload": {
+        "psr-4": { "yii\\mongodb\\": "" }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }
diff --git a/extensions/redis/composer.json b/extensions/redis/composer.json
index 756102836a..6526e23308 100644
--- a/extensions/redis/composer.json
+++ b/extensions/redis/composer.json
@@ -1,26 +1,31 @@
 {
-	"name": "yiisoft/yii2-redis",
-	"description": "Redis Cache, Session and ActiveRecord for the Yii framework",
-	"keywords": ["yii2", "redis", "active-record", "cache", "session"],
-	"type": "yii2-extension",
-	"license": "BSD-3-Clause",
-	"support": {
-		"issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aredis",
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Carsten Brandt",
-			"email": "mail@cebe.cc"
-		}
-	],
-	"require": {
-		"yiisoft/yii2": "*"
-	},
-	"autoload": {
-		"psr-4": { "yii\\redis\\": "" }
-	}
+    "name": "yiisoft/yii2-redis",
+    "description": "Redis Cache, Session and ActiveRecord for the Yii framework",
+    "keywords": ["yii2", "redis", "active-record", "cache", "session"],
+    "type": "yii2-extension",
+    "license": "BSD-3-Clause",
+    "support": {
+        "issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aredis",
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Carsten Brandt",
+            "email": "mail@cebe.cc"
+        }
+    ],
+    "require": {
+        "yiisoft/yii2": "*"
+    },
+    "autoload": {
+        "psr-4": { "yii\\redis\\": "" }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }
diff --git a/extensions/smarty/composer.json b/extensions/smarty/composer.json
index 7d32b6d28c..15940f686b 100644
--- a/extensions/smarty/composer.json
+++ b/extensions/smarty/composer.json
@@ -1,27 +1,32 @@
 {
-	"name": "yiisoft/yii2-smarty",
-	"description": "The Smarty integration for the Yii framework",
-	"keywords": ["yii2", "smarty", "renderer"],
-	"type": "yii2-extension",
-	"license": "BSD-3-Clause",
-	"support": {
-		"issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Asmarty",
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Alexander Makarov",
-			"email": "sam@rmcreative.ru"
-		}
-	],
-	"require": {
-		"yiisoft/yii2": "*",
-		"smarty/smarty": "*"
-	},
-	"autoload": {
-		"psr-4": { "yii\\smarty\\": "" }
-	}
+    "name": "yiisoft/yii2-smarty",
+    "description": "The Smarty integration for the Yii framework",
+    "keywords": ["yii2", "smarty", "renderer"],
+    "type": "yii2-extension",
+    "license": "BSD-3-Clause",
+    "support": {
+        "issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Asmarty",
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Alexander Makarov",
+            "email": "sam@rmcreative.ru"
+        }
+    ],
+    "require": {
+        "yiisoft/yii2": "*",
+        "smarty/smarty": "*"
+    },
+    "autoload": {
+        "psr-4": { "yii\\smarty\\": "" }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }
diff --git a/extensions/sphinx/composer.json b/extensions/sphinx/composer.json
index db3e928c15..b561ea9684 100644
--- a/extensions/sphinx/composer.json
+++ b/extensions/sphinx/composer.json
@@ -1,28 +1,33 @@
 {
-	"name": "yiisoft/yii2-sphinx",
-	"description": "Sphinx full text search engine extension for the Yii framework",
-	"keywords": ["yii2", "sphinx", "active-record", "search", "fulltext"],
-	"type": "yii2-extension",
-	"license": "BSD-3-Clause",
-	"support": {
-		"issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Asphinx",
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Paul Klimov",
-			"email": "klimov.paul@gmail.com"
-		}
-	],
-	"require": {
-		"yiisoft/yii2": "*",
-		"ext-pdo": "*",
-		"ext-pdo_mysql": "*"
-	},
-	"autoload": {
-		"psr-4": { "yii\\sphinx\\": "" }
-	}
+    "name": "yiisoft/yii2-sphinx",
+    "description": "Sphinx full text search engine extension for the Yii framework",
+    "keywords": ["yii2", "sphinx", "active-record", "search", "fulltext"],
+    "type": "yii2-extension",
+    "license": "BSD-3-Clause",
+    "support": {
+        "issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Asphinx",
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Paul Klimov",
+            "email": "klimov.paul@gmail.com"
+        }
+    ],
+    "require": {
+        "yiisoft/yii2": "*",
+        "ext-pdo": "*",
+        "ext-pdo_mysql": "*"
+    },
+    "autoload": {
+        "psr-4": { "yii\\sphinx\\": "" }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }
diff --git a/extensions/swiftmailer/composer.json b/extensions/swiftmailer/composer.json
index f248942888..409c710410 100644
--- a/extensions/swiftmailer/composer.json
+++ b/extensions/swiftmailer/composer.json
@@ -1,27 +1,32 @@
 {
-	"name": "yiisoft/yii2-swiftmailer",
-	"description": "The SwiftMailer integration for the Yii framework",
-	"keywords": ["yii2", "swift", "swiftmailer", "mail", "email", "mailer"],
-	"type": "yii2-extension",
-	"license": "BSD-3-Clause",
-	"support": {
-		"issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aswiftmailer",
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Paul Klimov",
-			"email": "klimov.paul@gmail.com"
-		}
-	],
-	"require": {
-		"yiisoft/yii2": "*",
-		"swiftmailer/swiftmailer": "*"
-	},
-	"autoload": {
-		"psr-4": { "yii\\swiftmailer\\": "" }
-	}
+    "name": "yiisoft/yii2-swiftmailer",
+    "description": "The SwiftMailer integration for the Yii framework",
+    "keywords": ["yii2", "swift", "swiftmailer", "mail", "email", "mailer"],
+    "type": "yii2-extension",
+    "license": "BSD-3-Clause",
+    "support": {
+        "issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aswiftmailer",
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Paul Klimov",
+            "email": "klimov.paul@gmail.com"
+        }
+    ],
+    "require": {
+        "yiisoft/yii2": "*",
+        "swiftmailer/swiftmailer": "*"
+    },
+    "autoload": {
+        "psr-4": { "yii\\swiftmailer\\": "" }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }
diff --git a/extensions/twig/composer.json b/extensions/twig/composer.json
index ee7b0f8582..bf83535fce 100644
--- a/extensions/twig/composer.json
+++ b/extensions/twig/composer.json
@@ -1,27 +1,32 @@
 {
-	"name": "yiisoft/yii2-twig",
-	"description": "The Twig integration for the Yii framework",
-	"keywords": ["yii2", "twig", "renderer"],
-	"type": "yii2-extension",
-	"license": "BSD-3-Clause",
-	"support": {
-		"issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Atwig",
-		"forum": "http://www.yiiframework.com/forum/",
-		"wiki": "http://www.yiiframework.com/wiki/",
-		"irc": "irc://irc.freenode.net/yii",
-		"source": "https://github.com/yiisoft/yii2"
-	},
-	"authors": [
-		{
-			"name": "Alexander Makarov",
-			"email": "sam@rmcreative.ru"
-		}
-	],
-	"require": {
-		"yiisoft/yii2": "*",
-		"twig/twig": "*"
-	},
-	"autoload": {
-		"psr-4": { "yii\\twig\\": "" }
-	}
+    "name": "yiisoft/yii2-twig",
+    "description": "The Twig integration for the Yii framework",
+    "keywords": ["yii2", "twig", "renderer"],
+    "type": "yii2-extension",
+    "license": "BSD-3-Clause",
+    "support": {
+        "issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Atwig",
+        "forum": "http://www.yiiframework.com/forum/",
+        "wiki": "http://www.yiiframework.com/wiki/",
+        "irc": "irc://irc.freenode.net/yii",
+        "source": "https://github.com/yiisoft/yii2"
+    },
+    "authors": [
+        {
+            "name": "Alexander Makarov",
+            "email": "sam@rmcreative.ru"
+        }
+    ],
+    "require": {
+        "yiisoft/yii2": "*",
+        "twig/twig": "*"
+    },
+    "autoload": {
+        "psr-4": { "yii\\twig\\": "" }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }
diff --git a/framework/composer.json b/framework/composer.json
index 251a8609b6..604f1b2a59 100644
--- a/framework/composer.json
+++ b/framework/composer.json
@@ -58,15 +58,20 @@
         "yiisoft/yii2-composer": "*",
         "ezyang/htmlpurifier": "4.6.*",
         "cebe/markdown": "0.9.*",
-        "bower-asset/jquery": "~1.11 | ~2.1",
-        "bower-asset/jquery.inputmask": "~3.1",
-        "bower-asset/punycode": "~1.3",
-        "bower-asset/yii2-pjax": "~2.0"
+        "bower-asset/jquery": "2.1.*@stable | ~2.1@stable | ~1.11@stable",
+        "bower-asset/jquery.inputmask": "3.1.* | ~3.1",
+        "bower-asset/punycode": "1.3.* | ~1.3",
+        "bower-asset/yii2-pjax": "2.0.* | ~2.0"
     },
     "autoload": {
         "psr-4": {"yii\\": ""}
     },
     "bin": [
         "yii"
-    ]
+    ],
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    }
 }